Harvard Business Review

DECEMBER 17, 2014

Do you work for a firm where managers think employees really have to work (what is called) “full time”? Around the time of the dot-com boom in 2000, founders Liann Eden and Dena McCallum saw that many of their ex-McKinsey colleagues would love to continue doing some consulting work, just not full time. Does it work?

McCallum 15

McCallum Competitive Advantage McKinsey Consultative 15

Harvard Business Review

AUGUST 7, 2012

At first blush, it sounds like something straight out of the mind of Scott Adams, but John McCallum's guide to management one-liners in the Ivey Business Journal has its sincere merits. The Far Reach of Supportive Senior Managers (Strategy+Business). HE LIKES ME, HE REALLY LIKES ME. BONUS BITS: Dining and Wining.

McCallum 14

McCallum CFO Covey Long-term 14

Harvard Business Review

JANUARY 3, 2017

Given these network effects – as many proclaim – markets get “winner takes all properties”: the largest network will win, crowding out the remaining competitors (like MySpace and Google+). It is a misconception to think that network effects inevitably and always lead to a winner-take-all market.

McCallum 15

McCallum Consultative Business Model Competitive Advantage 15